./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:48:19,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:48:19,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:48:19,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:48:19,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:48:19,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:48:19,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:48:19,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:48:19,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:48:19,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:48:19,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:48:19,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:48:19,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:48:19,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:48:19,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:48:19,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:48:19,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:48:19,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:48:19,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:48:19,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:48:19,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:48:19,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:48:19,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:48:19,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:48:19,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:48:19,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:48:19,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:48:19,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:48:19,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:48:19,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:48:19,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:48:19,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:48:19,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:48:19,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:48:19,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:48:19,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:48:19,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:48:19,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:48:19,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:48:19,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:48:19,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:48:19,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:48:19,388 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:48:19,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:48:19,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:48:19,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:48:19,390 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:48:19,390 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:48:19,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:48:19,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:48:19,391 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:48:19,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:48:19,392 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:48:19,393 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:48:19,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:48:19,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:48:19,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:48:19,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:48:19,394 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:48:19,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:48:19,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:48:19,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:48:19,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:48:19,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:19,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:48:19,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:48:19,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:48:19,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:48:19,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:48:19,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:48:19,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:48:19,397 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:48:19,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:48:19,398 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:48:19,398 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6872adb14a2dfa535a444bb6d903bd37f60f26cf718935f2927b47d5c5a6aaa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:48:19,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:48:19,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:48:19,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:48:19,702 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:48:19,702 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:48:19,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2023-08-30 11:48:20,771 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:48:20,950 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:48:20,951 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c [2023-08-30 11:48:20,959 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12dd742e5/31ff77a708854b5f8d1d446a3aaabb10/FLAG49a3ba3e1 [2023-08-30 11:48:20,971 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12dd742e5/31ff77a708854b5f8d1d446a3aaabb10 [2023-08-30 11:48:20,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:48:20,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:48:20,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:20,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:48:20,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:48:20,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:20" (1/1) ... [2023-08-30 11:48:20,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1ed58e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:20, skipping insertion in model container [2023-08-30 11:48:20,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:48:20" (1/1) ... [2023-08-30 11:48:20,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:48:21,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:48:21,198 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2023-08-30 11:48:21,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:21,218 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:48:21,252 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-multiply-verify.wvr.c[3042,3055] [2023-08-30 11:48:21,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:48:21,271 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:48:21,271 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:48:21,277 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:48:21,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21 WrapperNode [2023-08-30 11:48:21,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:48:21,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:21,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:48:21,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:48:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,305 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,342 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 200 [2023-08-30 11:48:21,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:48:21,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:48:21,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:48:21,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:48:21,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,392 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:48:21,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:48:21,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:48:21,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:48:21,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (1/1) ... [2023-08-30 11:48:21,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:48:21,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:21,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:48:21,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:48:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:48:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:48:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:48:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:48:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:48:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:48:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:48:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:48:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:48:21,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:48:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:48:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:48:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:48:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:48:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:48:21,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:48:21,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:48:21,485 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:48:21,636 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:48:21,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:48:21,901 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:48:22,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:48:22,186 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 11:48:22,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:22 BoogieIcfgContainer [2023-08-30 11:48:22,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:48:22,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:48:22,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:48:22,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:48:22,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:48:20" (1/3) ... [2023-08-30 11:48:22,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b3c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:22, skipping insertion in model container [2023-08-30 11:48:22,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:48:21" (2/3) ... [2023-08-30 11:48:22,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499b3c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:48:22, skipping insertion in model container [2023-08-30 11:48:22,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:22" (3/3) ... [2023-08-30 11:48:22,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2023-08-30 11:48:22,205 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:48:22,212 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:48:22,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-30 11:48:22,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:48:22,322 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:48:22,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 163 transitions, 350 flow [2023-08-30 11:48:22,446 INFO L130 PetriNetUnfolder]: 9/160 cut-off events. [2023-08-30 11:48:22,447 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:48:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 9/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-30 11:48:22,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 163 transitions, 350 flow [2023-08-30 11:48:22,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 142 transitions, 299 flow [2023-08-30 11:48:22,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:48:22,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 142 transitions, 299 flow [2023-08-30 11:48:22,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 142 transitions, 299 flow [2023-08-30 11:48:22,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 142 transitions, 299 flow [2023-08-30 11:48:22,530 INFO L130 PetriNetUnfolder]: 8/142 cut-off events. [2023-08-30 11:48:22,537 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:48:22,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 8/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2023-08-30 11:48:22,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 2332 [2023-08-30 11:48:27,287 INFO L134 LiptonReduction]: Checked pairs total: 2358 [2023-08-30 11:48:27,287 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-30 11:48:27,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:48:27,304 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@128d87d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:48:27,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 11:48:27,306 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:48:27,307 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:27,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:27,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:48:27,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:27,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:27,312 INFO L85 PathProgramCache]: Analyzing trace with hash 23597, now seen corresponding path program 1 times [2023-08-30 11:48:27,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:27,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309447027] [2023-08-30 11:48:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:27,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309447027] [2023-08-30 11:48:27,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309447027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:27,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:27,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:48:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673412543] [2023-08-30 11:48:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:27,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:48:27,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-08-30 11:48:27,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:27,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-08-30 11:48:27,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:27,908 INFO L130 PetriNetUnfolder]: 1043/1549 cut-off events. [2023-08-30 11:48:27,909 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 11:48:27,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 1549 events. 1043/1549 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6179 event pairs, 826 based on Foata normal form. 0/861 useless extension candidates. Maximal degree in co-relation 1320. Up to 777 conditions per place. [2023-08-30 11:48:27,923 INFO L137 encePairwiseOnDemand]: 286/295 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 11:48:27,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 234 flow [2023-08-30 11:48:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-30 11:48:27,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322033898305085 [2023-08-30 11:48:27,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-30 11:48:27,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-30 11:48:27,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:27,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-30 11:48:27,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,952 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 79 flow. Second operand 3 states and 471 transitions. [2023-08-30 11:48:27,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 234 flow [2023-08-30 11:48:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 216 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:27,962 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 74 flow [2023-08-30 11:48:27,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-30 11:48:27,967 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-30 11:48:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 74 flow [2023-08-30 11:48:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:27,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:27,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:27,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:48:27,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:27,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:27,973 INFO L85 PathProgramCache]: Analyzing trace with hash 732691, now seen corresponding path program 1 times [2023-08-30 11:48:27,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243263551] [2023-08-30 11:48:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:28,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243263551] [2023-08-30 11:48:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243263551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:28,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538731737] [2023-08-30 11:48:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:28,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:28,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:28,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:28,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:48:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:28,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:28,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538731737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:28,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:28,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:48:28,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390858006] [2023-08-30 11:48:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:48:28,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-08-30 11:48:28,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:28,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-08-30 11:48:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:28,541 INFO L130 PetriNetUnfolder]: 1043/1548 cut-off events. [2023-08-30 11:48:28,541 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:28,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1548 events. 1043/1548 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6195 event pairs, 826 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 1587. Up to 775 conditions per place. [2023-08-30 11:48:28,549 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 48 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-30 11:48:28,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 50 transitions, 222 flow [2023-08-30 11:48:28,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:48:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:48:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 595 transitions. [2023-08-30 11:48:28,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042372881355932 [2023-08-30 11:48:28,553 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 595 transitions. [2023-08-30 11:48:28,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 595 transitions. [2023-08-30 11:48:28,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:28,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 595 transitions. [2023-08-30 11:48:28,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,560 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 4 states and 595 transitions. [2023-08-30 11:48:28,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 50 transitions, 222 flow [2023-08-30 11:48:28,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:28,563 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 72 flow [2023-08-30 11:48:28,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-30 11:48:28,563 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-30 11:48:28,564 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 72 flow [2023-08-30 11:48:28,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:28,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:48:28,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:28,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:28,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:28,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 732698, now seen corresponding path program 1 times [2023-08-30 11:48:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203546020] [2023-08-30 11:48:28,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:28,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:28,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203546020] [2023-08-30 11:48:28,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203546020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338877355] [2023-08-30 11:48:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:28,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:28,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:28,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:28,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:48:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:28,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:28,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:48:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:28,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338877355] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:48:28,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:48:28,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:48:28,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387645620] [2023-08-30 11:48:28,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:48:28,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:48:28,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:48:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:48:28,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 295 [2023-08-30 11:48:28,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:28,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:28,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 295 [2023-08-30 11:48:28,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:29,474 INFO L130 PetriNetUnfolder]: 2606/3867 cut-off events. [2023-08-30 11:48:29,474 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:48:29,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7932 conditions, 3867 events. 2606/3867 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18115 event pairs, 2065 based on Foata normal form. 0/2156 useless extension candidates. Maximal degree in co-relation 6339. Up to 776 conditions per place. [2023-08-30 11:48:29,491 INFO L137 encePairwiseOnDemand]: 292/295 looper letters, 117 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2023-08-30 11:48:29,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 122 transitions, 536 flow [2023-08-30 11:48:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:48:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:48:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 941 transitions. [2023-08-30 11:48:29,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316384180790961 [2023-08-30 11:48:29,495 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 941 transitions. [2023-08-30 11:48:29,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 941 transitions. [2023-08-30 11:48:29,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:29,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 941 transitions. [2023-08-30 11:48:29,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.83333333333334) internal successors, (941), 6 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:29,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 295.0) internal successors, (2065), 7 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:29,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 295.0) internal successors, (2065), 7 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:29,502 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 72 flow. Second operand 6 states and 941 transitions. [2023-08-30 11:48:29,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 122 transitions, 536 flow [2023-08-30 11:48:29,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 122 transitions, 533 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:48:29,504 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 105 flow [2023-08-30 11:48:29,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-30 11:48:29,505 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2023-08-30 11:48:29,505 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 105 flow [2023-08-30 11:48:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:29,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:29,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:48:29,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:48:29,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:29,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 703874887, now seen corresponding path program 1 times [2023-08-30 11:48:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278762497] [2023-08-30 11:48:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278762497] [2023-08-30 11:48:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278762497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204161564] [2023-08-30 11:48:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:29,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:48:29,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 295 [2023-08-30 11:48:29,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:29,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:29,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 295 [2023-08-30 11:48:29,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:30,237 INFO L130 PetriNetUnfolder]: 1994/3033 cut-off events. [2023-08-30 11:48:30,238 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 11:48:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 3033 events. 1994/3033 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14678 event pairs, 1359 based on Foata normal form. 0/1809 useless extension candidates. Maximal degree in co-relation 6061. Up to 2535 conditions per place. [2023-08-30 11:48:30,251 INFO L137 encePairwiseOnDemand]: 284/295 looper letters, 47 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-30 11:48:30,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 255 flow [2023-08-30 11:48:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:48:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:48:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 724 transitions. [2023-08-30 11:48:30,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908474576271186 [2023-08-30 11:48:30,254 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 724 transitions. [2023-08-30 11:48:30,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 724 transitions. [2023-08-30 11:48:30,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:30,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 724 transitions. [2023-08-30 11:48:30,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,260 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,260 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 105 flow. Second operand 5 states and 724 transitions. [2023-08-30 11:48:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 255 flow [2023-08-30 11:48:30,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 247 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:30,262 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 143 flow [2023-08-30 11:48:30,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-30 11:48:30,263 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-30 11:48:30,263 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 143 flow [2023-08-30 11:48:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:30,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:48:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 11:48:30,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:30,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 353657761, now seen corresponding path program 1 times [2023-08-30 11:48:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445245772] [2023-08-30 11:48:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445245772] [2023-08-30 11:48:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445245772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317618959] [2023-08-30 11:48:30,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:30,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:30,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:30,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:48:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:30,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:48:30,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:48:30,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317618959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:30,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:30,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 11:48:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276807995] [2023-08-30 11:48:30,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:30,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:30,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:48:30,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 295 [2023-08-30 11:48:30,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:30,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 295 [2023-08-30 11:48:30,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:30,617 INFO L130 PetriNetUnfolder]: 774/1221 cut-off events. [2023-08-30 11:48:30,617 INFO L131 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2023-08-30 11:48:30,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 1221 events. 774/1221 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4874 event pairs, 523 based on Foata normal form. 0/1221 useless extension candidates. Maximal degree in co-relation 3026. Up to 1221 conditions per place. [2023-08-30 11:48:30,623 INFO L137 encePairwiseOnDemand]: 290/295 looper letters, 26 selfloop transitions, 1 changer transitions 1/28 dead transitions. [2023-08-30 11:48:30,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 179 flow [2023-08-30 11:48:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-30 11:48:30,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937853107344633 [2023-08-30 11:48:30,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-30 11:48:30,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-30 11:48:30,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:30,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-30 11:48:30,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,630 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 143 flow. Second operand 3 states and 437 transitions. [2023-08-30 11:48:30,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 179 flow [2023-08-30 11:48:30,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:48:30,632 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 117 flow [2023-08-30 11:48:30,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-08-30 11:48:30,633 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-30 11:48:30,633 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 117 flow [2023-08-30 11:48:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:30,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:30,634 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:48:30,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:30,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:30,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 353936820, now seen corresponding path program 2 times [2023-08-30 11:48:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750219690] [2023-08-30 11:48:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750219690] [2023-08-30 11:48:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750219690] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:48:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897971032] [2023-08-30 11:48:30,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:48:30,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:30,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:48:30,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:48:30,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:48:31,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:48:31,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:48:31,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:48:31,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:48:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:48:31,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:48:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897971032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:48:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:48:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980908539] [2023-08-30 11:48:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:48:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:48:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:48:31,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 295 [2023-08-30 11:48:31,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:31,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 295 [2023-08-30 11:48:31,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:31,152 INFO L130 PetriNetUnfolder]: 538/880 cut-off events. [2023-08-30 11:48:31,152 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2023-08-30 11:48:31,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 880 events. 538/880 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3390 event pairs, 343 based on Foata normal form. 1/881 useless extension candidates. Maximal degree in co-relation 2315. Up to 880 conditions per place. [2023-08-30 11:48:31,157 INFO L137 encePairwiseOnDemand]: 293/295 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 11:48:31,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 159 flow [2023-08-30 11:48:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:31,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-08-30 11:48:31,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488135593220339 [2023-08-30 11:48:31,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-08-30 11:48:31,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-08-30 11:48:31,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:31,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-08-30 11:48:31,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,164 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 117 flow. Second operand 3 states and 432 transitions. [2023-08-30 11:48:31,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 159 flow [2023-08-30 11:48:31,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 148 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 11:48:31,166 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 98 flow [2023-08-30 11:48:31,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-30 11:48:31,167 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-08-30 11:48:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 98 flow [2023-08-30 11:48:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:48:31,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:48:31,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:48:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:48:31,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-30 11:48:31,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:48:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1147689622, now seen corresponding path program 1 times [2023-08-30 11:48:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:48:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337440645] [2023-08-30 11:48:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:48:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:48:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:48:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:48:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:48:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337440645] [2023-08-30 11:48:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337440645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:48:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:48:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:48:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674663371] [2023-08-30 11:48:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:48:31,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:48:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:48:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:48:31,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 11:48:31,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 295 [2023-08-30 11:48:31,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:48:31,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 295 [2023-08-30 11:48:31,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:48:31,548 INFO L130 PetriNetUnfolder]: 338/568 cut-off events. [2023-08-30 11:48:31,548 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-08-30 11:48:31,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 568 events. 338/568 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 207 based on Foata normal form. 112/680 useless extension candidates. Maximal degree in co-relation 1470. Up to 568 conditions per place. [2023-08-30 11:48:31,550 INFO L137 encePairwiseOnDemand]: 293/295 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-08-30 11:48:31,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 136 flow [2023-08-30 11:48:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:48:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:48:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-30 11:48:31,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480225988700565 [2023-08-30 11:48:31,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-30 11:48:31,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-30 11:48:31,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:48:31,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-30 11:48:31,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,555 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 98 flow. Second operand 3 states and 425 transitions. [2023-08-30 11:48:31,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 136 flow [2023-08-30 11:48:31,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 127 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 11:48:31,556 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-08-30 11:48:31,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-08-30 11:48:31,557 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 11:48:31,557 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-08-30 11:48:31,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:48:31,560 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-08-30 11:48:31,560 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-30 11:48:31,560 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-30 11:48:31,560 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-30 11:48:31,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-30 11:48:31,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-30 11:48:31,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-30 11:48:31,561 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 25 remaining) [2023-08-30 11:48:31,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-30 11:48:31,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-30 11:48:31,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-30 11:48:31,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-30 11:48:31,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-30 11:48:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:48:31,566 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-30 11:48:31,571 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:48:31,571 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:48:31,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:48:31 BasicIcfg [2023-08-30 11:48:31,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:48:31,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:48:31,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:48:31,574 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:48:31,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:48:22" (3/4) ... [2023-08-30 11:48:31,576 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:48:31,580 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:48:31,580 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:48:31,580 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 11:48:31,585 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-30 11:48:31,585 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:48:31,586 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:48:31,586 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:48:31,623 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:48:31,623 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:48:31,623 INFO L158 Benchmark]: Toolchain (without parser) took 10650.05ms. Allocated memory was 79.7MB in the beginning and 306.2MB in the end (delta: 226.5MB). Free memory was 59.8MB in the beginning and 237.8MB in the end (delta: -178.0MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,623 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:48:31,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.68ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 47.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.75ms. Allocated memory is still 79.7MB. Free memory was 47.8MB in the beginning and 45.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,624 INFO L158 Benchmark]: Boogie Preprocessor took 56.24ms. Allocated memory is still 79.7MB. Free memory was 45.4MB in the beginning and 43.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,624 INFO L158 Benchmark]: RCFGBuilder took 786.57ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.5MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,625 INFO L158 Benchmark]: TraceAbstraction took 9383.92ms. Allocated memory was 79.7MB in the beginning and 306.2MB in the end (delta: 226.5MB). Free memory was 53.3MB in the beginning and 240.9MB in the end (delta: -187.7MB). Peak memory consumption was 191.9MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,625 INFO L158 Benchmark]: Witness Printer took 48.90ms. Allocated memory is still 306.2MB. Free memory was 240.9MB in the beginning and 237.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:48:31,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.68ms. Allocated memory is still 79.7MB. Free memory was 59.6MB in the beginning and 47.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.75ms. Allocated memory is still 79.7MB. Free memory was 47.8MB in the beginning and 45.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.24ms. Allocated memory is still 79.7MB. Free memory was 45.4MB in the beginning and 43.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 786.57ms. Allocated memory is still 79.7MB. Free memory was 43.7MB in the beginning and 54.1MB in the end (delta: -10.5MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9383.92ms. Allocated memory was 79.7MB in the beginning and 306.2MB in the end (delta: 226.5MB). Free memory was 53.3MB in the beginning and 240.9MB in the end (delta: -187.7MB). Peak memory consumption was 191.9MB. Max. memory is 16.1GB. * Witness Printer took 48.90ms. Allocated memory is still 306.2MB. Free memory was 240.9MB in the beginning and 237.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 144 PlacesBefore, 39 PlacesAfterwards, 142 TransitionsBefore, 32 TransitionsAfterwards, 2332 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 5 ChoiceCompositions, 132 TotalNumberOfCompositions, 2358 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1962, independent: 1932, independent conditional: 0, independent unconditional: 1932, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1108, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1962, independent: 836, independent conditional: 0, independent unconditional: 836, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 1108, unknown conditional: 0, unknown unconditional: 1108] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 201 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 561 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 22 mSDtfsCounter, 561 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 51 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 2 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 12/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:48:31,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE